Model passenger railway car truck



Sept. 12, 1950 w. G. STEWART 2,522,317

MODEL PASSENGER RAILWAY CAR TRUCK Filed Sept. 26, 1946 2 Sheets-Sheet l n "Mai- IIIIIIIIHIH INVENTOR s P 1950 w. G. STEWART 2,522,317

v MODEL PASSENGER RAILWAY CAR TRUCK Filed Sept. 26, 1946 2 Sheets-Sheet 2 g I; E, f 15 17 I uvzmolf ATTORNEYS Patented Sept. 12, 1950 s PATENT uince -MODEL PASSENGER RAILWAYCARTRUGK Willis G. Stewart; Portsmouth, R. I.,. assignor to UNITED STATE truck to the car.

Midgage Models Inc., Portsmouth, R; L, acorporation of lthode Island Application September as, 1946,.Serial No. 699,400

3 Claims. (o1.- 105-182) This invention relates to improvementsin scale model railway passenger car truck assemblies.

The object of my invention is to provide a model railway car truck that reproduces with a high dein Fig.1; I v i Fig. 4 is' across-sectional view taken. atline 4- -4 in Fig. 1;

is a cross sectional'view taken. at line 5+5 in Fig. 2; and

which is manufactured from a dielectric material such as plastic. As shown in Fig. 5, the bolster member I has an aperture 2 for the insertion upwardly of a king pin (not shown) to attach the The side frame assemblies are attached to the bolster I by rivets 3 passing downwardly through the bolster and a shank extension 4 of the inner side frame member 5. This shank extension 4 is cast integrally with the inner side frame member 5; A simulated leaf spring '6 is also cast integrally with the inner side frame member 5.

The wheel and axle assembly, best illustrated in Fig. 4, comprises an axle l manufactured from a dielectric material such as plastic having wheels 8 and spindles 9.

The side frame assembly is made up of the inner side frame member 5 and the equalizer II]. The inner side frame member 5 has vertically elongated apertures II as shown in Fig. 6, while the Fig. 6 is aeross=sectional view takenat line equalizer III has-normally rounded apertures I2. A journal box l3 passes through the equalizer aperture I2, the inner side frame elongated aperture' II, a washer I4 and contains the axle spindle gree of faithfulness its prototype and. at the same 5 9. The journal box I3, after the assembly of the time, a truck s i e that ay be assembled sidejframe and equalizer to the wheel and axle by its user. Another feature of my invention is assembly and-bolster, is flared at point I5 as i s a ility to be used o oub e p ed t ac shown in Fig. 4. This flaring retains the washer without fear of short circuiting the, system. I4, the inner side frame member'fi, the equalizer A further feature of my invention isfits shock 10 III and the journal in lateral sliding attachment. absorbing system that allows the truck to be'run Coiled springs I6 are positioned between the at relatively high speecls'over switchea'crossings bars I'I-of the inner side frame member 5 and and rough track-without fear of derailment. the bar l8 of the equalizer It on studs I9 as shown Other objects and features of-my invention'will in Fig; 3. These studs are cast integrally with the make themselves apparent during the course-of 1 members 5 and III. Fig.3A shows another meththe"following description when taken with the ed of' attachingstuds to the bars IT and I8 of accompanyingdrawings in which: the members 5 and I I] by means of rivets 20 which Figure 1 is a side elevation of the-assembled "pass through'the bar I8. truck; 3 These assemblies are put up in *kits with all the Fig. 2 is a top plan view of the assembled truck; 2 necessary parts'to be assembled by the user. In Fig. 3 is a cross-sectional view of the coil spring assembly, the user will first assemble the equalizer a'ndmeans-for "positioning thereof taken at line Ill-and inner side frame member 5 by inserting 3-3,in Fig. 1; the journal box I3 through the round hole I2 in Fig. 3A is,,a cross-sectional view of another the outer side frame It and the elongated hole II method of positioning the coil spring at line 3.-3 2 in theinner side frame 5. The washer I4 is then placed over the journal box I3 as shown in Fig. 4 andafter the user has made sure that the inner membersare capable of vertical sliding movement,

the-washer is permanently positioned on the journal box I3 by flaring out the journal box I3 at point l5. The coiled springs I6 can now be inserted between the members 5 and Ill.

The slotted bolster I is then placed over the attaching lug 4 of the inner side frame 5 and the rivets 3 are inserted through the bolster I and the lug 4 after the user has drilled the necessary pin holes in the lug 4. The escutcheon pins 3 are riveted in place. The riveting is only done on one side of the truck until the wheel and axle assemblies have been placed in position, after which the opposite side frame assembly is positioned and the riveting at the other end of the bolster is done.

It will be seen that the springs continuously urge the inner and outer side frame members apart in a vertical direction. The equalizer II] can so move because the elongated holes II in the inner frame 5 allow the journal bearing I3 containing the axle l to move vertically within the aperture thus absorbing the shock transmitted by the wheels as they strike an intersection or any rough section of track. In addition, the axles and bolster both being made of a, dielectric material such as plastic, prevent a short circuit when employed on double polarized track.

This ingenious method of assembly gives full play to the model railway enthusiasts desire for realism as well as his enthusiasm for actually assembling the truck. 7

While the preferred embodiment of my invention has been described herein, it is to be understood that variations in assembly and parts within the scope of the claims may be employed. There is no intention of limitation to the exact details shown and described.

I claim:

1. A railway truck for scale model passenger cars having in combination a wheel and axle assembly, the axle of said assembly being constructed of a dielectric material, an inner frame having attached integrally thereto a simulated leaf spring and projecting rearwardly from said simulated leaf spring a shank for insertion in a prepared recess in a bolster member, a bolster member having said recess and drilled vertically to receive a king pin, said bolster member being constructed of a dielectric material, said inner frame having two pedestals'with a bar extending therebetween and two stud projections on the under side of the bar, said inner frame having vertically elongated apertures in said pedestals to allow free vertical movement of the wheel and axle assembly, an equalizer comprising a bar having two stud projections 0n the topside thereof positioned opposite to the stud projections on the inner frame, said opposite stud projections in each instance receiving and retaining in position two coil springs, a pair of journal boxes, said equalizer having ends each having an aperture for passage of one of said journal boxes, said wheel and axle assembly including an axle stud projection and said journal boxes each having an axle hole for reception of the axle stud projection,

each journal box having a flange at its outer extremity, a washer, for each journal box, each journal box being turned down to receive said washer, said journal boxes being mounted through said inner frame and equalizer apertures,

whereby said inner and outer frames are held.

2. A railway car truck assembly comprising an outer frame having holes at its ends, an inner frame having holes elongated transversely to the frame, wheel axle bearings for fitting in said holes in the ends of the outer frame and sufficiently long to project through said elongated holes in said inner frame when the two frames are associated together with their holes in registry, and means for application to the ends of said bearings for interfastening said inner and outer frames against lateral separation while permitting relative movement in the direction of elongation of said holes, compression springs, and means for retaining said compression springs between said side frames to urge them apart in the direction of the elongation of said elongated holes.

3. A model railway passenger car truck 'assembly including the combination of an equalizer having journal box openings, a side frame having vertically elongated journal box apertures, said openings and apertures being adapted for mutual registration when said equalizer and frame are cooperatively positioned parallel each other, journal boxes adapted for insertion in said openings and engagement with said equalizer and to extend therefrom inwardly through said side frame apertures, and fastenings for the inner ends of said journal boxes on the inside of said side frame to prevent their withdrawal from said apertures, whereby said journals may function to interfasten said equalizer and frame against lateral separation while permitting vertical movement of said equalizer relative to said side frame for distances limited by the lengths of said apertures, said journal boxes having inwardly directed axle openings.

WILLIS G. STEWART.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name vDate 421,893 Battles Feb. 25, 1890 563,285 Lamkey July 7, 1896 931,414 Grant Aug. 17, 1909 1,994,304 Devlin Mar. 12, 1935 2,062,965 Boyd Dec. 1, 1936 

